i am at the moment in Canada (Vancouver and Vancouver Island). i only get sometimes a 4G/LTE connection even when it is shown. When I go to 3G it seems to work everytime. Furthermore I only can use the BeÖl network

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You should have 4G LTE when you connect to either the Bell/Telus network in Canada. I am currently visiting Toronto and I have 4G LTE. It does drop down to 3G when I place a call though but I am pretty sure that is related to the issues with my OnePlus 7 Pro because I get 4G LTE on my Xiaomi Mi MIX 3 and VoLTE works fine with my T-Mobile SIM. Try powering off your device for a few minutes to allow it to refresh on the network.

Vancouver Island is also hit and miss for coverage. Victoria has good coverage and so does Nanaimo. Anywhere in between is very hit and miss for LTE or anything at all. Once you leave the greater Vancouver area, coverage also tends to be very hit and miss. Canada's two cellular networks are horrible outside of anywhere that doesn't have a population over 50,000 people.

I will be in Victoria on Monday and test again. But also when I was in Vancouver for 3 days i had the problem that my iPhone shows me LTE but I was ‚t Able to,open any website or have any data transfer. Then without anything to do it was working and later it wasn‘t.

only when I manually switch to 3g I always have a data connection. Furthermore i do not get any connection when a Manuel choose the Telus network.

We are going to need to get a service ticket opened for this. If you have a moment, please either call us or use the Facebook or Twitter links in my signature to message our T-Force team. They will be able to gather the necessary information from you to get this process started.

Although Ontario is no where near British Columbia. As I leave Toronto and head east to Kingston and then back down to Virginia. I will try to pay attention to the connectivity of my OnePlus 7 Pro to see how things are getting away from a big metropolis. Out here in Toronto though, I find my speeds for data are faster than what most of my family get on their Canadian plans, even if that company is the network I am roaming on to.

Traveling east from Toronto to upstate NY, I had no VoLTE on my T-Mobile OnePlus 7 Pro at all and haven't in Canada since big issue with the Bell and Rogers Canada-wide networks going down a couple of weeks ago for almost a day with issues persisting still to this day. On a side note, the 9.5.8 seems to be the cause of the non-working WiFi Calling, at least reported by users who got fed up with the issues and cross-flashed to the international 9.5.10. The same issues appear in the international 9.5.8 and 9.5.9 firmware. But... Roaming in Canada, at least everywhere I have been over the past few weeks, left me with dropped calls and dropping to 3G for calls. I reflashed the firmware, checked the APN settings (not that they can be changed on the T-Mobile firmware), tried multiple factory resets, submitted a logLit with OnePlus, and talked to T-Mobile's support and engineers almost a dozen times. The issue must be with the Canadian (Bell) service provider and T-Mobile needs to get a call into their contact there and make sure this gets fixed. I did get 4G LTE working, but I honestly wouldn't be surprised if some users roaming that don't have VoLTE where everything is correct, that Bell's network issues are the result of my issues dropping to 3G or losing the call entirely where there is no 3G and LTE issues. As soon as I got to the NY state border, my OnePlus 7 Pro switched back to T-Mobile and VoLTE has worked flawlessly from that point down Philadelphia, Baltimore, DC, and back in Hampton, Virginia.

Disastrous Service in Victoria! I can call out-bound most of the time when WIFI is enabled, and occasionally on cellular. Almost no one can reach me on my phone, including my wife whom is on the same plan. We can be sitting right next to each other, and the call will not go through. Wifi enabled - or not. I have missed hundreds of calls, and only know that because clients have emailed stating that they get a fast busy signal, it just rings, or it says call failed. Not a few times, hundreds of people and thousands of attempts. I have spent like 6 hours on the phone, with T-Mobile and they can not figure it out. Now when my wife calls my number it goes to the voicemail system and asks for the password to retrieve my mail. Keep in mind - this is my wife calling my number!

Now my phone says call TMobile to enable WIFI?!? I mean there is something seriously wrong - and T-Mobile thus far seems to be absolutely clueless on how to fix all of their technical issues.

It's not bad, it's epically bad. If you need to receive calls - make plans to have an alternate plan/carrier. Better yet, switch to a carrier who actually has service, and carrier agreements that are valid and work.